Solar or photovoltaic (PV) systems can play a significant role in promoting environmental health, building health and building biology. Solar PV systems convert sunlight into electricity that can be used to power a building. This can help reduce the building’s reliance on fossil fuels and reduce greenhouse gas emissions. Solar PV systems can also help reduce energy costs for households and businesses. By choosing solar PV systems that are energy-efficient, non-toxic and have a minimal impact on the environment, building owners can help promote a healthier indoor environment for building occupants